Most do work is used correctly. i would recommend a facial for extractions and cleansing of the skin or even trying a facial scrub you could use weekly to help with keeping the skin cleaned.

Strips do seem to work pretty well however they do not remove every single blackhead present. If you have an abundance or still need to remove some after using a strip. Try another strip or a black head removing tool. If this is still not enough, you may want to go in for a facial and request extractions.